Method and apparatus for indicating a load
CA 2260040 C · Owner: Accurate Bolt Technologies, Inc. · Inventors: Waxman, Cory S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention provides an innovative method and apparatus for determining continuous, visual clamp load status during tightening and throughout the life of a fastener. The present invention provides a nondeformable element (or in some cases elements) (15) that is suitably configured and positioned within a fastener to amplify the deformation of the fastener as a load is applied to the fastener. In accordance with one aspect of the invention, a lever is connected at an internal pivot point of a cartridge. One end of the lever rests upon an abutment within the fastener while the other end serves as an indicator. As the fastener is tightened the , fastener will elongate causing …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed July 7, 1997 and granted September 30, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 7, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 7, 2019.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.